Switch commoncpp2 to ucommon to solve dependency conflicts.
libccrtp was depending on commoncpp2, and have been replaced by a version
depending on ucommon as well.
diff --git a/jni/libucommon/sources/test/keydata.conf b/jni/libucommon/sources/test/keydata.conf
new file mode 100644
index 0000000..a4cebed
--- /dev/null
+++ b/jni/libucommon/sources/test/keydata.conf
@@ -0,0 +1,12 @@
+key1 = value1
+key2 = value2
+
+# this is a comment
+
+[section1]
+key1 = "this is value 1 quoted"
+key2 = this is value 2 unquoted
+
+[section2]
+key1 = new section
+key1 = replaced value